|Posted by B & B Maintenance on June 14, 2009 at 6:22 PM|
Have you ever had a brown patch with a reddish tinge on your lawnand wondered what it is? If it's not spray paint or your kid'spaintball gun, it's probably red thread lawn disease. Red thread is notthe deadliest lawn disease, but you don't want to take it lightly.Severe cases of this disease can kill the grass completely.
Red thread lawn disease is common in red fescue grass and perennialryegrass. Bermuda, bentgrass and Kentucky bluegrass are sometimesaffected.
Laetisaria fuciformisTheaffected areas appear in irregularly-shaped patches of a reddish orpink complexion. It is difficult to identify red thread disease untilthe more advanced stages of disease development. This stage is whenbright coral pink fungus mycelium reaches a length of 1/16" to 1/4" atthe tip of the damaged, thin and wiry leaves. This fungi spreads by moving mycelium or infected leaves to newareas. These fungi can also be transported by your lawn mower becausethe mycelium on grass is easily broken loose. The ideal development ofred thread occurs between temperatures of 65 and 75 degrees Fahrenheit.
How Do You Get Rid of It?
Get out your fertilizer. Adding more nitrogen to your lawn usuallyreduces red thread disease. However, having a higher level of nitrogencan cause other disease damage such as leaf spot and brown patch. Inmost cases, a fungicide treatment is unnecessary, but wet weather cansometimes cause severe damage. In this situation, a fungicide wouldhelp reduce symptoms.